refacotring to support s3 to s3
adding s3 to s3 sync support
only sync if one is a valid s3 url
updating version, changelog and readme
updated readme
refactoring to multiple files
refactoring to support s3 to s3
adding tests
changing back to version 3 for now
tweaks to ensure files are not re-synced
adding go 1.3 to travis
removing cover to fix travis for now
fix for latest cli
Merge pull request #15 from brettweavnet/add_s32s3

Add support for s3 -> s3 transfers